Bug #17215: Backport for arm64 optimizations that exist for power/x86

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: DONE

[jaruga (Jun Aruga)]

Is it possible to backport this commit to ruby_2_7?

Enable arm64 optimizations that exist for power/x86
https://github.com/ruby/ruby/commit/511b55bcefc81c036294dc9a544d14bd342acd3b
The commit comes from https://github.com/ruby/ruby/pull/3393 .

Thanks.

[ali (Ali Saidi)]

jaruga (Jun Aruga) wrote:

Is it possible to backport this commit to ruby_2_7?

Enable arm64 optimizations that exist for power/x86
https://github.com/ruby/ruby/commit/511b55bcefc81c036294dc9a544d14bd342acd3b
The commit comes from https://github.com/ruby/ruby/pull/3393 .

Thanks.

I'm happy to submit a backport. I've tried it and it's pretty trivial.

[jaruga (Jun Aruga)]

Hi Ali, thanks for your help!

Please note I think the commit is a new feature, and the ticket with "Tracker: Feature" does not have the backport field to make the backport easy. But if someone likes changing the Tracker type from Feature to Bug, I am happy to change it.

[naruse (Yui NARUSE)]

As you know Ruby only backports bugfixes. If you think this is a feature, it won't be backported.

But note that in CRuby context "bug" is defined as fixes which may be backported.
If you believe a fix is a bug, you can request to backport it even if some other people think it's a feature.
The final decision is made by the branch maintainer, whether or not people consider it a bug.

[jaruga (Jun Aruga)]

• Tracker changed from Feature to Bug
• Backport set to 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: REQUIRED

Thanks for explaining the context of "bug" in CRuby.
In the context, I think the commit is to fix the relatively slower performance by the optimization, while there are already x86 and powerpc applying the optimization. So, I change the Tracker type to "bug", and pass the baton to the branch maintainer.

[vo.x (Vit Ondruch)]

• Status changed from Open to Closed

I am going to use this patch on Fedora, if it helps:

https://src.fedoraproject.org/rpms/ruby/blob/master/f/ruby-3.0.0-preview1-Enable-arm64-optimizations-that-exist-for-power-x86.patch

[jaruga (Jun Aruga)]

I am asking the backport to Ruby project's 2.7 branch.
If you use the patch on Fedora, why does it connect for you to close this ticket's status?

[jeremyevans0 (Jeremy Evans)]

jaruga (Jun Aruga) wrote in #note-6:

I am asking the backport to Ruby project's 2.7 branch.
If you use the patch on Fedora, why does it connect for you to close this ticket's status?

Backport issues are closed after the appropriate backport marker has been set, similarly to how regular bug fixes are closed after the code has been fixed in master. It is still up to the branch maintainer whether they want to backport the fix.

You can check that this issue is on the "Backport 2.7" list: https://bugs.ruby-lang.org/projects/ruby-master/issues?query_id=172

[jaruga (Jun Aruga)]

Thank you for the explanation. I remember the backporting rule now. I am sorry for disturbing you.

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: REQUIRED to 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: DONE

ruby_2_7 6ef46f71c743507a0e2ae0eef14dce0539b0ff52 merged revision(s) 511b55bcefc81c036294dc9a544d14bd342acd3b.